.iframe {
  position: fixed;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  z-index: -1;
}

:root {
  --login-bg: #c6cee3;
  --front: rgba(113, 113, 232, 0.6);
  --back: rgba(78, 78, 158, 0.6);

}

iframe {
  position: fixed;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  z-index: -1;
}

body {
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100vw;
  margin: 0;
  padding: 0;
  background-color: var(--login-bg);
  position: relative;
}

.setting {
  position: absolute;
  right: 30px;
  top: 10px;
  width: 50px;
  display: flex;
  flex-direction: column;
}

.setting:hover {
  cursor: pointer;
}

.setting img {
  width: 30px;
  height: 30px;
}

//ul {
//  padding: 0;
//  margin: 0;
//  display: none;
//}

.setting div {
  margin: 2px;
  padding: 2px;
  width: 50px;
  height: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.setting div:hover {
  background-color: #999999;
}

.main {
  width: 850px;
  height: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: rgba(173, 187, 228, 0.19);
  box-shadow: 0.3rem 0.3rem 0.6rem #7e869d, -0.2rem -0.2rem 0.5rem #9391c3;
  border-radius: 5px;
}

.head {
  display: flex;
  flex-direction: row;
  padding: 10px 0;
  font-weight: bold;
}

.head div {
  margin: 3px 15px;
  padding: 6px 9px;
  border-radius: 5px;
  transition: all 0.3s ease;
  display: flex;
  font-size: 18px;
  color: rgba(245, 241, 241, 0.62);
  align-items: center;
}

.head div img {
  width: 35px;
  height: 35px;
  margin: 2px 3px;
}

.head div:hover {
  background-color: rgba(63, 76, 189, 0.34);
  transform: scale(1.05);
  color: white;
  cursor: pointer;
}

.main .head .big {
  background-color: rgba(63, 76, 189, 0.83);
  transform: scale(1.05);
  color: white;
}

.head div:active {
  transform: scale(0.95);
}

.body {
  border-radius: 10px;
  position: relative;
  width: 800px;
  height: 500px;
  /*background-color: #662bd3;*/
  transition: all 0.5s;
  transform-style: preserve-3d;
}

.body .front {
  z-index: 1;
  background-color: var(--front);
}

.body .front, .body .back {
  position: absolute;
  top: 0;
  left: 0;
  width: 800px;
  height: 500px;
  border-radius: 10px;
  border: none;
  display: flex;
}

.back {
  transform: translateY(250px) rotateX(-90deg);
  background-color: var(--back);
}

.body div .left {
  width: 350px;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: #be7dec 0 0 10px 0
}

.body div .right {
  width: 500px;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.body div .right .exist {
  position: absolute;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  text-align: center;
  display: none;
}

.body form {
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: translateY(-50px);
}

.body form h2 {
  text-align: center;
  margin-top: 30px;
}

.body form input {
  outline: none;
  background: none;
  border: none;
  width: 200px;
  height: 50px;
  margin: 20px 0;
  font-size: 16px;
  border-bottom: 1px solid white;
  transition: all 0.3s ease;
  color: white;
}

.body form input::placeholder {
  color: white;
}

.body form input:focus {
  border: white solid 1px;
  transform: scale(1.2);
}

.body form button {
  outline: none;
  border: none;
  width: 120px;
  height: 50px;
  background-color: #8751ea;
  border-radius: 15px;
  font-size: 18px;
  margin-top: 20px;
  transition: all 0.3s ease;
  color: white;
}

.body form button:hover {
  transform: scale(1.1);
}

.body form button:active {
  transform: scale(0.9);
}

.left .welcome {
  font-size: 30px;
  font-weight: bold;
  margin-bottom: 50px;
}

.left img {
  width: 120px;
  height: 120px;
}

.left p {
  font-size: 18px;
}

.theme{
  position: absolute;
  height: 100%;
  width:100%;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: -1;
  background-color: black;
  overflow: hidden;
}

.input{
  border-radius: 5px;
}